Multi-band antenna

Abstract

The present invention relates to a multi-band antenna, which comprises: a first antenna array of a first band configured by a radiation module of the first band; a (2-1)th antenna array of a common band between a second band and third band, the (2-1)th antenna array including radiation modules for the common band between the second band and third band; a (2-1)th phase shifter for receiving an input signal of the second band, distributing signals having phase difference therebetween to pre-configured radiation modules or groups of multiple radiation modules among the radiation modules of the (2-1)th antenna array, respectively, and then providing the signals; a (3-1)th phase shifter for receiving an input signal of the second band, distributing signals having phase difference therebetween to pre-configured radiation modules or groups of multiple radiation modules among the radiation modules of (2-1)th antenna array, respectively, and then providing the signals; a plurality of (2-1)th frequency combiners for combining one pre-configured signal among output signals of the (2-1)th phase shifter with one corresponding signal among output signals of the (3-1)th phase shifter, and providing a combined signal to each pre-configured radiation module among the radiation modules of the (2-1)th antenna array or a pre-configured group among groups of multiple radiation modules among the radiation modules of the (2-1)th antenna array.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of International Application No. PCT / KR2014 / 009829 filed on Oct. 20, 2014, which claims priority to Korean Application No. 10-2013-0135481 filed on Nov. 8, 2013, which applications are incorporated herein by reference.TECHNICAL FIELD[0002]The present disclosure relates to an antenna technology suitable for a mobile communication (personal communication service (PCS), cellular, international mobile telecommunication-2000 (IMT-2000) or the like) base station or relay, and more particularly, to a multi-band antenna.BACKGROUND ART[0003]Along with the popularity of mobile communications and wireless broadband data communication, efforts are now made to render various frequency bands to be available due to the lack of frequency bands. Multiple input and multiple output (MIMO) based on multiple antennas is a requisite technology to increase data rate, finding its applications in mobile communication network sys...

AI Technical Summary

Benefits of technology

The present disclosure aims to provide a multi-band antenna that has a structure that reduces the size of the antenna and improves its stability. This makes it easier to design and use, and offers more reliable performance.

Problems solved by technology

As a result, their installation cost increases and constraints are imposed on a tower space in which the antennas are to be installed in a real outdoor environment.

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